-3=-3/1

0,5=1/2

2+3/7=17/7

1, Tê giác Java

2,Chim gõ kiến mỏ ngà

3,Báo Amur

4,Vượn tre

5,Cá voi lưng thẳng

6,Khỉ đột

7,Rùa luýt

8,Hổ Siberia

9,Kỳ giông khổng lồ

10,Hải cẩu Hawaii

1, is borrowing;giving

2,isn't painting

3,am doing;is reading

4,aren't planting

5,Are they making

1.We have played tennis for 2 years

2.Mai has gone to library today

3.My sister has moved a new house near her boyfriend's flat

4.His teacher hasn't explained this lesson yet

5.This is the best film I have ever watched

6,Minh has just left office for 2 hours

7.Have they written a report sine last Monday?

1, a

2,some

1,have -> has

2,game->game

3,never has-> has never (her-> his nha)

4,has-> have

5,wash->washed

3,ANY

4,AN

\(\dfrac{12}{18}\in Q\) Vì nó có dạng \(\dfrac{a}{b}\left(a,b\in Z;b\ne0\right)\)

\(\Leftrightarrow\left(3x+1-3x+1\right)\left(3x+1+3x-1\right)=-60\)

\(\Leftrightarrow2.6x=-60\)

\(\Leftrightarrow12x=-60\)

\(\Leftrightarrow x=-60:12\)

\(\Leftrightarrow x=-5\)

Vậy \(x=-5\)

2,Where does

3,How are

4,How much are

5,What is

6,Who is

7,Where is